1 / 8

Adding Integers with Counters

Adding Integers with Counters. How to use counters. White counters represent positive numbers. Red or shaded counters represent negative numbers. Lay or draw counters out to represent all of the numbers in the problem. Pair up negative and positive counters

lperalta
Télécharger la présentation

Adding Integers with Counters

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Adding Integers with Counters

  2. How to use counters • White counters represent positive numbers. • Red or shaded counters represent negative numbers. • Lay or draw counters out to represent all of the numbers in the problem. • Pair up negative and positive counters • When you pair up negative and positive counters, they are equal to zero. • These pairs are known as zero pairs. • Move any zero pairs that you have made off to the side. • Count up what you have left and that is your answer.

  3. -9 + 4 + 9 negative counters 4 positive counters Get rid of pairs. What do you have left? 5 negative counters Answer = -5

  4. 6 + -8 8 negative counters + 6 positive counters Get rid of pairs. What do you have left? 2 negative counters Answer = -2

  5. -2 + 16 16 positive counters 2 negative counters + Get rid of pairs. What do you have left? 14 positive counters Answer = 14

  6. 10 + -10 10 positive counters + 10 negative counters Get rid of pairs. What do you have left? 0 units Answer = 0

  7. -5 + -5 5 negative counters + 5 negative counters Get rid of pairs. What do you have left? 10 negative counters Answer = -10

  8. Try these problems using counters! 1. -7 + -5 = 2. -2 + 6 = 3. 8 + -5 = 4. -10 + 3 = 5. -13 + 6 = 6. -8 + 8 = 7. -13 + -4 = 8. -9 + 8 = 9. 10 + -15 = 10. 3 + -3 = 0 -12 -17 4 3 -1 -7 -5 0 -7

More Related